How to reset the scrollbar and scroll position of a CListCtrl box?

Hi i have a CListCtrl Box (in Icon view) in my application which i need to fill it up with lots of icons and the icons will be removed and new icons will be added from time to time... everythings working fine except i can't figure out how to reset the scrollbar and scroll position (to origin) when i'm updating the icons.
At the moment I got this in my code but it doesn't seem to working too well: